I wonder if the 22mm spec is just the overhang and that usable may end up near 30mm or so....more moving mass than an lms ultra 18 raises an eyebrow. we'll see where the production specs come in...

Agreed. It would be absolutely killer if this thing specs out like that in reality. Not saying they're fibbing, but it would be quite an accomplishment if this even fell in between the HO18 and the LMS for this price. I know a certain psychopath that will have quite a few of them if they do

I'm a noob with winisd, but I put in the parameters for both the Dayton Audio HO 18" and the new Dayton Audio Ultimax 18" specs in winisd and set it to a closed box (sealed) with 99.109 liters which is 3.5 cubic foot according to google and got the following frequency response plots with a single watt.

Looks like (if I even did the simplest of calculations right) that you get an extra couple dB down low with this driver over the HO.

Considering I've tried to contact Innovative Sound Technologies to purchase 4 UXL-18 drivers.....................and a week and one-half later have received no reply........................yes, to your question.

Hint: You really don't need a huge box for this driver, thanks to the middle-of-the-road Qts, but if you want solid response into the teens, that's one way to get it. Infinite baffle is another. Xmax is enormous, but there's even more Xmech available.

If you've only got room for a smaller box, the UM18-22 will also work well in 4 cubes, sealed, and with as much EQ as you care to throw at it. The 1000W RMS power rating is conservative for the coil."

I think I might pre-order 4 to put in my four sealed 3.5 cubic foot boxes. What do you think Scott or LTD02?

Well didn't you see my reaction to the news?

Quote:

Originally Posted by jpmst3

3" VC too! Not bad!

F**k yeah! That means it's a whole new (and larger) motor. Ohh yeah.

Quote:

Originally Posted by Archaea

I pre-ordered four just now...

meh - why not. 2 months to cancel if I change my mind.

Oh ... alright! *erhm* Hell yeah! That will hopefully put some extra hurtin' on top of your dual Cap's.

Quote:

Originally Posted by doublewing11

Considering I've tried to contact Innovative Sound Technologies to purchase 4 UXL-18 drivers.....................and a week and one-half later have received no reply........................yes, to your question.

Tomorrow, I'm pre-ordering 4 of these drivers........................

Oh wow...

Quote:

Originally Posted by doublewing11

I just pre-ordered four...........................

...oh snap!

Damn. I better get to pre-ordering a pair before the first batch is gone!

I'm guessing these model pretty similar to the Stereo Integrity 18"? I didn't model out the SI 18" yesterday, but looking at data-bass.com it looks like the Dayton 18" HO native FR was about 1.5 dB less than the SI at 12.5hz, and based on my model above - it seems like they'd be pretty similar in native frequency response, with the Dayton driver able to handle more power.